55512170520 has 64 divisors (see below), whose sum is σ = 166912600320. Its totient is φ = 14769815424.

The previous prime is 55512170509. The next prime is 55512170543. The reversal of 55512170520 is 2507121555.

It is a super-3 number, since 3×55512170520³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468964 + ... + 575283.

It is an arithmetic number, because the mean of its divisors is an integer number (2608009380).

Almost surely, 2^55512170520 is an apocalyptic number.

It is an amenable number.

55512170520 is an abundant number, since it is smaller than the sum of its proper divisors (111400429800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55512170520 is a wasteful number, since it uses less digits than its factorization.

55512170520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044704 (or 1044700 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 33.

The spelling of 55512170520 in words is "fifty-five billion, five hundred twelve million, one hundred seventy thousand, five hundred twenty".